sorry I've been mia for a couple of months, it's been crazy for me.
For several months LO has fidgeted with his ear as a sign that he is tired. Then about a month ago he started covering his ears with his hands. The child has been teething basically nonstop since 6 months old (I'm not exaggerating either, he has 14 teeth already, including a few molars) so I kind of just attributed it to that. But he does it A LOT now. And he isn't pulling on them or anything, he's literally just holding his hands over his ears. It doesn't happen when there's loud noise or anything. He does it at totally random times like during meals or while laying on the changing table. If I do it he turns it into a little game where he'll pull his hands away and I just repeat him which he seems to get a kick out of..
anyway, this is basically at the top of the "early sign" lists for autism which I'm always worried about (I have a brother who is nonverbal on the spectrum) so I guess I'm just looking for a little reassurance that my son isn't the only one that does this?

Re: Covering ears?
My littlest, Piper, doesn't like her hair in her ears, so she fusses with it. I'm going to attempt to give her a trim around the ears, so hopefully that will help.
Allergies/teething could cause possibly cause him to have TMJ or ear pain in that way, but I'm 100% with @mrscaterosales that you should definitely check with his pediatrician, especially given the family history.
Good luck, Shelby!